Author/Authors :
David G. P. A. Breen، نويسنده , , Jonathan M. Horner، نويسنده , , Keith D. Bartle، نويسنده , , Anthony A. Clifford، نويسنده , , James Waters، نويسنده , , J. Graham Lawrence، نويسنده ,
Abstract :
Supercritical fluid extraction (SFE) was carried out on dried sewage sludge samples in a preliminary study to evaluate the feasibility and efficiency of SFE in the recovery of dihardenedtallowdimethyl ammonium chloride (DHTDMAC) in comparison with an existing liquid extraction method. Extracts were analysed by a specific HPLC method. The effect of modifier concentration on DHTDMAC recovery was investigated.